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103949 = 195471
BaseRepresentation
bin11001011000001101
312021120222
4121120031
511311244
62121125
7612026
oct313015
9167528
10103949
117110a
12501a5
1338411
1429c4d
1520bee
hex1960d

103949 has 4 divisors (see below), whose sum is σ = 109440. Its totient is φ = 98460.

The previous prime is 103919. The next prime is 103951. The reversal of 103949 is 949301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 949301 = 2693529.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-103949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2717 + ... + 2754.

It is an arithmetic number, because the mean of its divisors is an integer number (27360).

2103949 is an apocalyptic number.

103949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

103949 is a deficient number, since it is larger than the sum of its proper divisors (5491).

103949 is an equidigital number, since it uses as much as digits as its factorization.

103949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5490.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 103949 is about 322.4112280923. The cubic root of 103949 is about 47.0190054418.

The spelling of 103949 in words is "one hundred three thousand, nine hundred forty-nine".

Divisors: 1 19 5471 103949